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EF1 tornado in Iosco County, Michigan

Tornado June 17, 2014 · Iosco County, Michigan

EF1

Rating

1.6 mi

Path length

100 yd

Path width

$140K

Damage as recorded

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 100 yards (0.06 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

What EF1 means. On the Enhanced Fujita scale, EF1 is moderate damage: roofs badly stripped, mobile homes pushed off foundations or overturned, windows broken, consistent with estimated gusts of 86–110 mph. The rating comes from a survey of the worst damage after the storm, not from a wind measurement, so it says as much about what the tornado hit as about how strong it was.

What the National Weather Service wrote

The tornado caused sporadic but considerable tree damage along its path. When it crossed the town of Hale, several high-profile vehicles were blown over, numerous utility poles were blown over, and several homes and businesses sustained roof damage. Estimated peak winds were 100 mph.

The wider storm

A squall line crossed northern lower Michigan during the late morning hours of the 17th. This line produced numerous wind gusts of 40 to 50 mph, but winds reached severe levels in only a few spots. Additional storms developed behind this line. One grew into a supercell that produced a brief tornado in the community of Hale, and additional wind damage further east.

Began near Hale (44.3722, -83.8247).

Source: NOAA Storm Events Database, event 531670. Narratives are written by the National Weather Service forecast office that issued the report.

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